[NFC][OpenMP] Update a test that was failing on aarch64. (llvm#164456)

The failure was reported here:

llvm#164039 (comment)

The test was checking for the "bad" behavior so as to keep track of it, but there seem to be some issues with the pointer arithmetic specific to aarch64.

The update for now is to not check for the "bad" behavior fully.

We may need to debug further if similar issues are encountered eventually once the codegen has been fixed.

Author: abhinavgaba

offload/test/mapping/use_device_addr/target_data_use_device_addr_class_member_ref_with_map.cpp

@@ -16,7 +16,7 @@ struct ST {
   int m = 0;
 
   void f6() {
-    uintptr_t offset = (uintptr_t)&d - n;
+    ptrdiff_t offset = (char *)&d - ((char *)(uintptr_t)n);
 #pragma omp target data map(to : m, d)
     {
       void *mapped_ptr = omp_get_mapped_ptr(&d, omp_get_default_device());
@@ -34,11 +34,15 @@ struct ST {
         // ref/attach modifiers:
         //  &ref_ptee(this[0].[d])), &ref_ptee(this[0].d), TO | FROM
         //  &ref_ptr(this[0].d), &ref_ptee(this[0].d), 4, ATTACH
-        // EXPECTED: 1 0
-        // CHECK:    0 1
-        printf("%d %d\n", &d == mapped_ptr,
-               (uintptr_t)&d == (uintptr_t)mapped_ptr - offset);
+        // EXPECTED:   1
+        // CHECK-NEXT: 0
+        printf("%d\n", &d == mapped_ptr);
+        ptrdiff_t offset_device = (char *)mapped_ptr - (char *)&d;
+        printf("offset = %td (%p), offset_device = %td (%p)\n", offset,
+               (void *)offset, offset_device, (void *)offset_device);
+        printf("mapped_ptr = %p, device_addr = %p, ", mapped_ptr, &d);
       }
+      printf("host_addr = %p\n", &d);
     }
   }
 };